Apparatus for drying grain



October '20, 1913. I

DRAWING P A careful search has be n made this day for the originaldrawing or a photqiithograyhi copy ofthe segue, for the purpose ofreproducing the said drawing to form a.

part of this book, but a; this time nothing can be found from which a,reproduction can be made.

Finis D. Eiorris,

Chief 0f Division B,

AWK

JAMES R. STAFFORD, OF CLEVELAND/01110.

APPARATUS FOR DRYING GRAIN, FLbUR, &c.

Specification of IiettersPatent No. 5,238, dated August 14, 1847.

To all whom it may concern Be it known that 1, JAMES R. STAFFORD, ofCleveland, in the county of Cuyahoga and State of Ohio, have invented anew and Improved Apparatus for Drying Grain, Flour, Meal, or otherSubstances or for Cooling the Same; and I do hereby declare thefollowing to be a full, clear, andexact description of the constructionand operation thereof, reference being had to the ac companyingdrawings, making a part of this specification, in which Figure 1, is aperspective view of the apparatus, and- Fig. 2, a portion of the samedetached.

A, is a cylinder, composed inch boiler iron,or other suitablemetaltwenty inches in diameter and twenty feetin length. The cylinder isput together in such manner as to render it perfectly steam tight; theends of the cylinder are riveted to the heads a, a, and 'corked so as torender the connection perfectly tight. The heads 0;, a, are of castiron,about half an inch thick. I), b, are hollow bearing journals castsolid with the heads a, a.

0', 0 0 &c., are horizontal radial fianches, secured at regularintervals upon the periphery of the cylinder; 2, 2, 2, &c.,, r

are helical or screw fianches secured to the periphery of the cylinder,passing around the same from one end to the other, and in-' tersectingthe horizontal fianches c, c, at a uniform distance from each other. Thefianches are three inches in height. The horizontal fianches o, 0, havelips secured to their outer edge projecting at right anglesmore orless-one inch over the face of the same, I generally make the fianchesof cast iron of inch thick. The horizontal fianches o, c, I rivet to theperiphery of the cylinder,the helical fianches are cast in sections andsecured to the horizontal fianches. If preferred however, the fianchesmay be constructed of sheet metal.

The cylinder A, is placed in a trough or box B, constructed of wood, orother suitable nonconducting material, of the form represented in Fig.1, in the accompanying drawings. The concave form of the bottom of thebox B, corresponds to the convexity of the outer edges of the fiancheson the cylinder. The journals 6, b, have their bearings in the ends ofthe box B. Suitable pipes are connected to each of the hollow journals6, b, for the purpose of conducting steam or hot air into and from thecylinder, when the apparatus is used for drying different substances;and for conducting cold air into the same, from some blowing machine,when the apparatus is used for cooling meal, flour, or other substances.

The cylinder is revolved in the direction of the arrow; the materials tobe'operated upon, are admitted on to the cylinder at d,

the action of the helical fianches 2, 2, 2, gradually moves the grain orother material from one end of the box B, to the other,

the horizontal fianches c, 0, 0 at the same 5 time serving to keep everyportion of the surface of the cylinder covered with, and balanced by,the substances acted upon, so that the same shall receive the entireradiation from the cylinder; and they also serve to agitate thesubstances as they fall from thereby causing every particle of the sameto be equally acted upon. The open top of the box or trough B, allowsthe moisture freely to escape, while the process of drying is going on;and the heat to escape while flour or other substance is being cooled.

f, is the discharging spout in the end of the box or trough B, throughwhich the various substances are discharged after hav ing been operatedupon as herein described.

I sometimes omit the helical fianches and place upon the cylinder A, aseries of hori- B, in which it revolves, a suflioient inclination tocause the grain, flour, &c. operated upon to be gradually moved forwardand discharged at the lowest end of the trough. A slight winding ordiagonal direction may be given to the horiozntal lipped fianches,whet-herused by themselves, or in combination with the helical fianches,if-preferred. IVhat I claim as my invention and desire to secure byLetters Patent, is-' g The method of drying or cooling grain, flour,meal or other substances, on the external surface of a hollow cylinder(A,) armed with fianches or other devices, arranged and operatingsubstantially as herein described, and combined with a trough,

(B,) the cylinder to be filled with hot air F JAMES R, STAFFORD.

. Witnesses:

I. W. ALLEN, L. C. TURNER.

75 one fianch to and between the others,

